Schedule of minimum future payments receivable for performing finance leases receivable (Details)	Mar. 31, 2022 USD ($)
Leases [Abstract]
Lease Receivable, 2022	$ 78,776
Lease Interest, 2022	26,852
Lease Receivable 2023	89,219
Lease Interest, 2023	18,127
Lease Receivable, 2024	97,161
Lease Interest, 2024	8,346
Lease Receivable, 2025	20,513
Lease Interest, 2025	1,295
Lease Receivable, 2026	1,319
Lease Interest, 2026	40
Lease Receivable, Thereafter
Lease Interest, Thereafter
Lease Receivable	286,988
Lease Interest	$ 54,660

Thereafter

No definition available.

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- Definition

2023

+ References

No definition available.

+ Details

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- Definition

2026

+ References

No definition available.

+ Details

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Namespace Prefix:	MNTR_
Data Type:	xbrli:monetaryItemType
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- Definition

Sales type and direct financing leases lease interest payments to be received next rolling year two.

+ References

No definition available.

+ Details

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- Definition

Salestype and direct financing leases lease interest payments to be received.

+ References

No definition available.

+ Details

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Namespace Prefix:	MNTR_
Data Type:	xbrli:monetaryItemType
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- Definition

2022

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

2025

+ References

No definition available.

+ Details

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- Definition

Thereafter

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in third rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=124258985&loc=SL77919391-209981

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in second rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=124258985&loc=SL77919391-209981

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in next rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in fourth rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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